US4230148A - Check-valve construction - Google Patents

Check-valve construction Download PDF

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Publication number
US4230148A
US4230148A US06/027,845 US2784579A US4230148A US 4230148 A US4230148 A US 4230148A US 2784579 A US2784579 A US 2784579A US 4230148 A US4230148 A US 4230148A
Authority
US
United States
Prior art keywords
valve
post
seat
hinge
valve members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/027,845
Other languages
English (en)
Inventor
Francis H. Ogle, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IMO AEROSPACE Co
IMO Industries Inc
Transdigm Inc
Original Assignee
De Laval Turbine Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by De Laval Turbine Inc filed Critical De Laval Turbine Inc
Priority to US06/027,845 priority Critical patent/US4230148A/en
Priority to DE19803001501 priority patent/DE3001501A1/de
Priority to CA345,400A priority patent/CA1130696A/en
Priority to GB8008177A priority patent/GB2046405B/en
Priority to FR8007305A priority patent/FR2453340B1/fr
Priority to JP4476380A priority patent/JPS55139564A/ja
Publication of US4230148A publication Critical patent/US4230148A/en
Application granted granted Critical
Assigned to IMO DELAVAL INC., reassignment IMO DELAVAL INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: TRANSAMERICA DELAVAL INC.,
Assigned to TRANSAMERICA DELAVAL INC. reassignment TRANSAMERICA DELAVAL INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DELAVAL TURBINE INC.
Assigned to IMO INDUSTRIES INC. reassignment IMO INDUSTRIES INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: IMO DELAVAL INC.,
Assigned to BANKERS TRUST COMPANY reassignment BANKERS TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: APPLIED OPTICS CENTER CORPORATION, BAIRD CORPORATION, DELTEX CORPORATION, IMO INDUSTRIES INC., INCOM TRANSPORTATION INC., OPTIC - ELECTRONIC INTERNATIONAL, INC., TURBODEL INC., VARO TECHNOLOGY CENTER INC., WARREN PUMPS INC.
Assigned to IMO AEROSPACE COMPANY reassignment IMO AEROSPACE COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IMO INDUSTRIES
Assigned to IMO INDUSTRIES INC. reassignment IMO INDUSTRIES INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANKERS TRUST COMPANY
Assigned to TRANSDIGM INC. reassignment TRANSDIGM INC. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: IMO AEROSPACE COMPANY
Assigned to CHASE MANHATTAN BANK, THE, AS COLLATERAL AGENT reassignment CHASE MANHATTAN BANK, THE, AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: TRANSDIGM INC. (DE CORPORATION)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
    • F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
    • F16K15/038—Dual valve members with hinges crossing the flow line substantially diametrical having a common hinge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K2200/00—Details of valves
    • F16K2200/20—Common housing having a single inlet, a single outlet and multiple valve members
    • F16K2200/203—Common housing having a single inlet, a single outlet and multiple valve members in parallel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7839—Dividing and recombining in a single flow path
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7898—Pivoted valves

Definitions

  • the invention relates to check-valves of the variety in which two like valve members are hinged on a single axis, for independent coaction with the respective valve-seat openings defined by a seat post which extends diametrically across the bore of the valve body.
  • Check valves of this character are illustratively described in U.S. Pat. No. 2,877,792 (Tybus), No. 3,538,946 (Hilsheimer), No. 3,678,958 (Satterwhite et al.), and No. 4,079,751 (Partridge et al.).
  • the hinge structure for the two valve members extends fully across the diameter of the valve-body opening and requires special machining of the body and/or added parts to be assembled to the bore of the body, for accommodation of the hinge structure.
  • a specific object is to achieve the above object with a construction having inherently improved flow-accommodating properties, for a valve of given size.
  • Another specific object is to achieve the above objects with a construction having a valve-body thickness of minimum proportions, to enable selective installation of a check-valve function by inserted fitting of the valve in the bore of a conduit, pipe or hose fitting.
  • Another specific object is to provide for such a valve a valve-member suspension which is spaced from and therefore essentially independent of the valve-body shell per se.
  • the invention achieves the foregoing and other objects and features by providing hinged suspension of the valve members directly from the seat post, and by having the end-to-end extent of the hinge suspension terminate short of the respective ends of the seat post.
  • a single centrally limited hinge means serves both valve members and has substantial radial clearance with the bore of the valve body.
  • FIG. 1 is a view in elevation of a check-valve of the invention, as viewed from the downstream end;
  • FIG. 2 is a longitudinal sectional view, taken at 2--2 in FIG. 1;
  • FIG. 3 is an exploded perspective view of valve-body and valve-member components of the valve of FIG. 1;
  • FIG. 4 is a view similar to FIG. 2 to show a modification.
  • FIGS. 1 to 3 the invention is shown in application to a check-valve comprising a body 10 having a cylindrically annular shell 11 with a cylindrical bore which is divided into two like generally semi-cylindrical seat openings or ports A-B, by means of a seat post 12 which extends diametrically across the bore and is preferably integral with the shell 11. Also integral with seat post 12 and body shell 11 is an axial offset or stem 13 of hinge-post means 14 which projects downstream from the mid-section of seat post 12.
  • the hinge-post means 14 establishes a hinge axis, parallel to the seat post 12 and at downstream offset from the valve-seating plane, established by the flat downstream end of body shell 11.
  • valve members 15-16 are connected by a single pintel 17 to the hinge-post means 14 for independent articulation about the hinge axis, and in the closed or valve-checking position, valve members 15-16 will be understood to peripherally continuously lap all seating surfaces of shell 11 and seat post 12 in the seating plane.
  • the hinge-post means 14 integrally includes transversely aligned radially outward arms 18-19, and a single bore through these arms and stem 13 establishes the hinge axis and is sized to accommodate insertion of pintel 17.
  • the end-to-end span of arms 18-19 need not be great to establish a single and adequate body reference for the hinge axis; preferably, this span S is less than the radius of the bore of shell 11, as shown, and arms 18-19 are cylindrical about the hinge axis.
  • the backsides of valve members 15-16 which may be duplicates of each other, are provided with integral hinge lugs 20-21 (20'-21') to achieve seating offset accommodation.
  • one hinge lug 20(20') is at a first (lesser) radial offset from the valve axis
  • the other hinge lug 21(21') is at a second (greater) radial offset from the valve axis, to the end that when assembled to arms 18-19 via pintel 17, the lugs 20-21 (20'-21') of both valve members not only span the arms 18-19 but also are in meshing interlace (see FIG. 1).
  • a snap ring 23 in a groove 22 at one end of pintel 17 retains the valve-member hinge connection.
  • the arms 18-19 are shown to additionally provide a body reference for resilient application of biasing force to each of the valve members, in the valve-closing direction.
  • separate coil springs with tangent end arms may be symmetrically mounted to the respective hinge arms 18-19, with the tangent arms at the respective ends of each such spring applying biasing force to a different one of the valve members 15-16.
  • a single spring 24 performs these functions in a manner to assure that the biasing force applied to each valve member is symmetrically applied, with respect to the central axis of the valve body.
  • a central bail-like arm 25 connects two like, but oppositely wound, coiled halves 26--26' which rest upon the respective hinge arms 18-19; the bail-like arm 25 bears upon valve member 15 symmetrically with respect to the section plane 2--2 through the axial center of body 10, and the outer tangent arms 27--27' of spring 24 also bear upon valve member 16 symmetrically with respect to the same section plane 2--2.
  • valve construction will be seen to acheive all stated objects and to permit embodiment of all necessary check-valve functions in a body shell 11 of essentially minimum thickness. Since no part of the shell 11 per se is required for hinge-journal or any other hinge purpose, the thin annualr nature of shell 11 may be circumferentially continuous except for short-radius fairing of seat-post-to-shell juncture. Adequate seating overlap ⁇ 1 is assured peripherally continuously for each valve member around the respective seat openings A-B, and at the same time a residual shoulder exposure ⁇ 2 is available for shoulder, snap-ring or other location within a pipe or fitting bore into which the check-valve of the invention is selectively installable.
  • standardized construction of the character indicated is employed in a variety of outer diameters, keyed for insertion compatability with internal diameters of standard pipe sizes.
  • Smooth contour and minimum constriction are presented to all downstream-directed flow and, except for a smooth ogival bulge 29 at the mid-section seat post 12, the latter may be as narrow as the thickness of shell 11, i.e. substantially 2 ⁇ 1 .
  • the invention is independent of the type of seal employed, or whether a seal is employed, at the seating regions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Lift Valve (AREA)
US06/027,845 1979-04-06 1979-04-06 Check-valve construction Expired - Lifetime US4230148A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US06/027,845 US4230148A (en) 1979-04-06 1979-04-06 Check-valve construction
DE19803001501 DE3001501A1 (de) 1979-04-06 1980-01-17 Absperrventil
CA345,400A CA1130696A (en) 1979-04-06 1980-02-11 Check-valve construction
GB8008177A GB2046405B (en) 1979-04-06 1980-03-11 Check-valve construction
FR8007305A FR2453340B1 (fr) 1979-04-06 1980-04-01 Structure de soupape de retenue
JP4476380A JPS55139564A (en) 1979-04-06 1980-04-07 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/027,845 US4230148A (en) 1979-04-06 1979-04-06 Check-valve construction

Publications (1)

Publication Number Publication Date
US4230148A true US4230148A (en) 1980-10-28

Family

ID=21840111

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/027,845 Expired - Lifetime US4230148A (en) 1979-04-06 1979-04-06 Check-valve construction

Country Status (6)

Country Link
US (1) US4230148A (enrdf_load_stackoverflow)
JP (1) JPS55139564A (enrdf_load_stackoverflow)
CA (1) CA1130696A (enrdf_load_stackoverflow)
DE (1) DE3001501A1 (enrdf_load_stackoverflow)
FR (1) FR2453340B1 (enrdf_load_stackoverflow)
GB (1) GB2046405B (enrdf_load_stackoverflow)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445533A (en) * 1981-08-13 1984-05-01 Allegheny Valve Company Air check valve assembly for powdered bulk product transport
US4507061A (en) * 1982-09-14 1985-03-26 Henry Filters, Inc. Check valve and pump receptor assembly
US4774981A (en) * 1987-02-20 1988-10-04 Nifco Inc. Check valve
US4867199A (en) * 1988-12-14 1989-09-19 Imo Industries, Inc. Bi-petal l check-valve construction
US4896695A (en) * 1989-05-01 1990-01-30 Pysh Wasyl A Check valve
US5392810A (en) * 1993-12-01 1995-02-28 Goodwin International Limited Plates for wafer check valves
US6253788B1 (en) * 1999-03-29 2001-07-03 Tesma-Motoren-Und Getriebetechnik Ges. M.B.H. Check valve for use in a filler pipe for filling a fuel tank
US20070107981A1 (en) * 2005-10-07 2007-05-17 Sicotte Jason M Exhaust silencer
US20080023080A1 (en) * 2006-07-31 2008-01-31 Honeywell International, Inc. Check valve stop assembly and method of retention
US20080053536A1 (en) * 2006-08-31 2008-03-06 Honeywell International, Inc. High flow insert type check valve
US20080072974A1 (en) * 2006-09-26 2008-03-27 Honeywell International, Inc. Engineered composite quiet check valve
US20090071549A1 (en) * 2006-08-30 2009-03-19 Honeywell International, Inc. Flapper with insert stops for check valve
US20100282340A1 (en) * 2009-05-06 2010-11-11 Hamilton Sundstrand Corporation Compliant check valve stop
US20110284128A1 (en) * 2010-05-19 2011-11-24 Ford Global Technologies, Llc One-way valve for a fuel-tank filling conduit
US20150337978A1 (en) * 2012-12-18 2015-11-26 Bs&B Innovation Limited Butterfly vent
US20170268696A1 (en) * 2016-03-15 2017-09-21 Hamilton Sundstrand Corporation Check valves
US9803761B1 (en) 2016-04-12 2017-10-31 Hs Wroclaw Sp. Z.O.O. Flapper check valve bumper
US10463018B2 (en) 2010-01-29 2019-11-05 Gea Houle Inc. Rotary milking station, kit for assembling the same, and methods of assembling and operating associated thereto
US10648581B2 (en) 2017-12-15 2020-05-12 Hamilton Sundstrand Corporation Check valves
US20220074512A1 (en) * 2020-03-19 2022-03-10 Mueller International, Llc Watertight check valve
EP4083478A1 (en) * 2021-04-27 2022-11-02 UTC Aerospace Systems Wroclaw Sp. z o.o. Flapper check valve
US11644113B2 (en) 2019-05-31 2023-05-09 Mueller International, Llc Break check valve for hydrant
US11725746B2 (en) 2021-06-07 2023-08-15 Mueller International, Llc Low water hammer break check valve
US20230349134A1 (en) * 2022-03-11 2023-11-02 Beneventi Alan D Automatic shutoff valve for breakaway wet barrel fire hydrant

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3402203A1 (de) 1984-01-24 1985-08-01 Mark Controls Corp., 5568 Daun Rueckschlagklappe
JPS61180073A (ja) * 1985-02-04 1986-08-12 Tokyu Car Corp 逆止弁
JPS6263474U (enrdf_load_stackoverflow) * 1985-10-11 1987-04-20
DE3725869A1 (de) * 1986-08-13 1988-02-18 Imo Delaval Inc Klappen-absperrorgan
US4935129A (en) * 1989-03-20 1990-06-19 Wang Kung Hsi Closure device for a scupper drain
JPH0367552U (enrdf_load_stackoverflow) * 1989-10-31 1991-07-02
DE4031456C3 (de) * 1990-10-04 1996-04-11 Bernhard Meyer Klappenrückschlagventil
US5381821A (en) * 1992-02-10 1995-01-17 Muddiman; Robert W. Fluid check valve with replaceable flapper assembly
US5496160A (en) * 1995-07-03 1996-03-05 Tecumseh Products Company Scroll compressor having a suction check valve
FR2793299B1 (fr) * 1999-05-06 2001-06-29 Cagnon Sa Perfectionnement pour vanne antiretour
DE102015107861A1 (de) * 2015-05-19 2016-11-24 Ritag Ritterhuder Armaturen Gmbh & Co. Armaturenwerk Kg Doppelrückschlagklappenventil
EP3181964B1 (en) 2015-12-14 2018-08-22 Hamilton Sundstrand Corporation Check valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1286672A (en) * 1916-12-16 1918-12-03 Fred O Lindgren Union check-valve.
US2877792A (en) * 1956-10-12 1959-03-17 Frank W Tybus Surge or back flow valve
US3538946A (en) * 1967-10-09 1970-11-10 George W Hilsheimer Check valve
US3678958A (en) * 1970-09-16 1972-07-25 Fmc Corp Check valve
US4043358A (en) * 1976-02-02 1977-08-23 Victaulic Company Of America Flapper check valve
US4079751A (en) * 1976-02-23 1978-03-21 Fmc Corporation Check valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR900119A (fr) * 1942-07-14 1945-06-20 Soupape de retenue destinée en particulier aux abris de protection contre les gaz
GB870868A (en) * 1958-10-13 1961-06-21 Rotax Ltd Non-return valves
GB915965A (en) * 1960-07-16 1963-01-16 O J Wootton Ltd Improvements in hose couplings
US3831628A (en) * 1973-03-13 1974-08-27 E Kintner Check valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1286672A (en) * 1916-12-16 1918-12-03 Fred O Lindgren Union check-valve.
US2877792A (en) * 1956-10-12 1959-03-17 Frank W Tybus Surge or back flow valve
US3538946A (en) * 1967-10-09 1970-11-10 George W Hilsheimer Check valve
US3678958A (en) * 1970-09-16 1972-07-25 Fmc Corp Check valve
US4043358A (en) * 1976-02-02 1977-08-23 Victaulic Company Of America Flapper check valve
US4079751A (en) * 1976-02-23 1978-03-21 Fmc Corporation Check valve

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445533A (en) * 1981-08-13 1984-05-01 Allegheny Valve Company Air check valve assembly for powdered bulk product transport
US4507061A (en) * 1982-09-14 1985-03-26 Henry Filters, Inc. Check valve and pump receptor assembly
US4774981A (en) * 1987-02-20 1988-10-04 Nifco Inc. Check valve
US4867199A (en) * 1988-12-14 1989-09-19 Imo Industries, Inc. Bi-petal l check-valve construction
US4896695A (en) * 1989-05-01 1990-01-30 Pysh Wasyl A Check valve
US5392810A (en) * 1993-12-01 1995-02-28 Goodwin International Limited Plates for wafer check valves
US6253788B1 (en) * 1999-03-29 2001-07-03 Tesma-Motoren-Und Getriebetechnik Ges. M.B.H. Check valve for use in a filler pipe for filling a fuel tank
US20070107981A1 (en) * 2005-10-07 2007-05-17 Sicotte Jason M Exhaust silencer
US20080023080A1 (en) * 2006-07-31 2008-01-31 Honeywell International, Inc. Check valve stop assembly and method of retention
US7562669B2 (en) 2006-07-31 2009-07-21 Honeywell International Inc. Check valve stop assembly and method of retention
US20090071549A1 (en) * 2006-08-30 2009-03-19 Honeywell International, Inc. Flapper with insert stops for check valve
US7779859B2 (en) * 2006-08-30 2010-08-24 Honeywell International Inc. Flapper with insert stops for check valve
US20080053536A1 (en) * 2006-08-31 2008-03-06 Honeywell International, Inc. High flow insert type check valve
US20080072974A1 (en) * 2006-09-26 2008-03-27 Honeywell International, Inc. Engineered composite quiet check valve
US7568498B2 (en) 2006-09-26 2009-08-04 Honeywell International Inc. Engineered composite quiet check valve
US20100282340A1 (en) * 2009-05-06 2010-11-11 Hamilton Sundstrand Corporation Compliant check valve stop
US8181669B2 (en) * 2009-05-06 2012-05-22 Hamilton Sundstrand Corporation Compliant check valve stop
US10463018B2 (en) 2010-01-29 2019-11-05 Gea Houle Inc. Rotary milking station, kit for assembling the same, and methods of assembling and operating associated thereto
US8439088B2 (en) * 2010-05-19 2013-05-14 Ford Global Technologies, Llc One-way valve for a fuel-tank filling conduit
US20110284128A1 (en) * 2010-05-19 2011-11-24 Ford Global Technologies, Llc One-way valve for a fuel-tank filling conduit
US10180193B2 (en) * 2012-12-18 2019-01-15 Bs&B Innovations Limited Butterfly vent
US20150337978A1 (en) * 2012-12-18 2015-11-26 Bs&B Innovation Limited Butterfly vent
US20170268696A1 (en) * 2016-03-15 2017-09-21 Hamilton Sundstrand Corporation Check valves
US10612690B2 (en) * 2016-03-15 2020-04-07 Hamilton Sundstrand Corporation Check valves
US9803761B1 (en) 2016-04-12 2017-10-31 Hs Wroclaw Sp. Z.O.O. Flapper check valve bumper
EP3232101B1 (en) * 2016-04-12 2019-11-06 HS Wroclaw Sp. z o.o. Flapper check valve bumper
US10648581B2 (en) 2017-12-15 2020-05-12 Hamilton Sundstrand Corporation Check valves
US11644113B2 (en) 2019-05-31 2023-05-09 Mueller International, Llc Break check valve for hydrant
US20220074512A1 (en) * 2020-03-19 2022-03-10 Mueller International, Llc Watertight check valve
US11635150B2 (en) * 2020-03-19 2023-04-25 Mueller International, Llc Watertight check valve
US11841087B2 (en) 2020-03-19 2023-12-12 Mueller International, Llc Watertight check valve
EP4083478A1 (en) * 2021-04-27 2022-11-02 UTC Aerospace Systems Wroclaw Sp. z o.o. Flapper check valve
US12055227B2 (en) 2021-04-27 2024-08-06 Hamilton Sundstrand Corporation Flapper check valve
US11725746B2 (en) 2021-06-07 2023-08-15 Mueller International, Llc Low water hammer break check valve
US20230349134A1 (en) * 2022-03-11 2023-11-02 Beneventi Alan D Automatic shutoff valve for breakaway wet barrel fire hydrant
US12188212B2 (en) * 2022-03-11 2025-01-07 Alan D. Beneventi Automatic shutoff valve for breakaway wet barrel fire hydrant

Also Published As

Publication number Publication date
CA1130696A (en) 1982-08-31
JPS6318063B2 (enrdf_load_stackoverflow) 1988-04-16
JPS55139564A (en) 1980-10-31
FR2453340A1 (fr) 1980-10-31
FR2453340B1 (fr) 1985-06-14
GB2046405A (en) 1980-11-12
DE3001501C2 (enrdf_load_stackoverflow) 1988-06-09
GB2046405B (en) 1983-03-16
DE3001501A1 (de) 1980-10-16

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